#3F78CF

#3F78CF

Color Values

HEX

#3F78CF

RGB

63, 120, 207

HSL

216.2, 60.0%, 52.9%

HSV

216.2, 69.6%, 81.2%

CMYK

69.6%, 42.0%, 0.0%, 18.8%

OKLCH

0.5778 0.147 258.7

Properties

Cool Light Nearest: dodgerblue 3

Color Harmonies

Complementary

#3F78CF

#CF963F

Analogous

#3FC0CF

#4E3FCF

#3F78CF

Triadic

#3F78CF

#CF3F78

#78CF3F

Split Complementary

#3F78CF

#CF4E3F

#C0CF3F

Tetradic

#3F78CF

#CF3FC0

#CF963F

#3FCF4E

Color Blindness Simulation

Original

#3F78CF

Protanopia

#5858BA

Deuteranopia

#5450B5

Tritanopia

#42A9A6

Achromatopsia

#727272

CSS Usage

background-color: #3F78CF;
color: #3F78CF;
border-color: #3F78CF;
Nearest Tailwind: Blue 500 #3B82F6

Tailwind Shades

50
#F3F7FB
100
#E4EBF6
200
#C6D7F1
300
#9DBAE7
400
#6895D9
500
#3370CC
600
#2959A3
700
#214783
800
#1A3866
900
#162B4B
950
#0E1B2F

Contrast Checker

Text on white

4.38:1

AA Fail AAA Fail

Text on black

4.8:1

AA Pass AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026